General C++ Programming - C++ Forum - August 2011 (Page 22)

Can we control the order in which two threads are executed

Say I have two threads P and C. I want the execution to follow the P C P C P C pattern. In order words, the execution of the two threads should alternate and no...

[9 replies] Last: Thank you all so much. Your input was very helpful. My program has def... (by vasiqshair)

by mof

Using BOOL as threadlock (1,2)

Hello, I've written my first multithreaded app (a directshow filter) but I have a question about the way I lock the data transfers. I am using a simple bool ...

[20 replies] Last: Well my thread aware filter is working. It involves 3 threads and two ... (by mof)

by Shoaib Abdullah

Please explain this small code

#include<iostream> using namespace std; class area { double dim1, dim2; public: void setarea(double d1, double d2) { dim1= d1; dim2 = d2; ...

[4 replies] Last: As Syuf said, derived classes can use (some of) the methods declared i... (by andywestken)

by JeremyMH

Parse Split Delimited str.

EDIT:: Here is a literal example of what I need. There will be a CSV file that is formatted like the following: FName,MInitial,LName,Description,Comment FN...

[7 replies] Last: Yeah, kind of. I wanted to be able to repeat the variables as well. I ... (by JeremyMH)

by vasiqshair

Using Peterson's solution for mutual exclusion

The idea was to have the producer thread run BEFORE the consumer thread. Always. But my program runs the consumer thread before the producer sometimes. I have u...

[1 reply] : use condition variable together with mutex http://www.cs.loyola.edu/~j... (by agile)

by Tanatos

string and sprintf()

Hello, I've a got a question. How can I use std::string object as the first argument of sprintf(), i.e. write to std::string using the C function sprintf() ins...

[8 replies] Last: The snprintf () function is C99, and it has some issues. http://linux... (by Duthomhas)

by liwei

test

#define CFA_INFRA_LOG_SOURCE 1 #include <CFAInfra/logging/Logging.hpp> #include <iostream> #pragma warning( disable : 4231 ) #include <log4cxx/logger.h>...

[1 reply] : What's the question? Also use code tags. See http://www.cplusplus.co... (by webJose)

by Helegurbann

File's icon

#include <windows.h> #define IDI_ICON1 101 char title ="New Window"; LRESULT CALLBACK P(HWND A,UINT B,WPARAM C,LPARAM D){ switch(B){ case 0x2: Pos...

[10 replies] Last: You edited winuser.h to add hIconSm to WNDCLASS? You should never c... (by andywestken)

by closed account zb0S216C

DirectX9 Assistance Required

I'm working on a wrapper for DirectX9, and it's coming along nicely. My current objective is to construct a handler for lights. However, IDirect3DDevice9::SetL...

[2 replies] Last: That clears things up :) Thanks, Quirk. Wazzak (by closed account zb0S216C)

by ahura24

STL

who body can find what is wrong in this code : template<class f, class h, class g> struct myfun : public unary_function<typename g::argument_type, typename f:...

[11 replies] Last: oh oh oh very very very bad mistake X_X tnx and tnx all my friend (by ahura24)

by JMJAtlanta

const and casting

Okay, for an intellectual exercise, I was digging in to the C++ spec. I was attempting to see how modifying a value stored in a const worked with my compiler. ...

[1 reply] : The compiler must have exchanged your references of constant i with it... (by webJose)

by soheilghafurian

intellisense not working for some pointers

Hi guys. I have a problem with intellisense. I have written a class with pointers to the members, but for some of them intellisense doesn't work. I know that if...

[7 replies] Last: Thanks a lot for your guide. I didn't know about inline files. Can I a... (by soheilghafurian)

by closed account zwA4jE8b

code optimization question

Using my game as an example again... Is passing a variable such as HDC everytime a common function is called or creating a variable in the class and only ini...

[2 replies] Last: oh ok. thank you. Ill just leave it as is then. (by closed account zwA4jE8b)

by kkg

Help with library implementation

Hi all, I'm attempting to write a program that will compute the FFTs of a data set 32 point accross the band froma user-specified file and will output the r...

[no replies]

by Chathu

Arrays of char

Hi, This Is A Question About Arrays. Plz I need Help.This Is A Simple Code I Wrote. #include<iostream> #include<cstdlib> #include<iomanip> using namesp...

[2 replies] Last: Thanks a Lot For Your Help!!! (by Chathu)

by Azagaros

Undefined reference???

I don't understand this error on gcc, mingw. // this stuff is in a separate file. namespace prog { enum progState { goodState, ...

[4 replies] Last: Static class members have to be both declared and defined. The problem... (by helios)

by sin0emp

Default value in functions

If I create a function with default value inputs like this prototype: void F(int a = 0, int b = 1, int c = 2); And I want to call this function with default v...

[1 reply] : Unfortunately, you can't do this -> F(2, ,3); A simple solution wou... (by m4ster r0shi)

by andywestken

const struct member in aggregate definition

The other day I updated the contents of a cpp file containing assorted static data definitions to tighten up the const-ness of the assorted string; from const ...

[1 reply] : C++ Standard section 8.5.1 wrote: An aggregate is an array or ... (by hamsterman)

by akachan

Division by 100 Precision

I have this code below: ---> long decimal = 57; long decimal_divider_ = 100; double dval = ((double) decimal / (double) decimal_divider_); <--- I am...

[1 reply] : Floating point math is not exact. (by Zhuge)

by Gatleos

Deleting Static Library Asset

So here's the deal: I've got a static character reference array which is an asset of a library I'm building. It's a global variable, and static so that it can o...

[2 replies] Last: So there's no reason to deallocate it? That makes sense. Thanks! (by Gatleos)

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General C++ Programming - August 2011 (Page 22)